CN117782782A - Movable tension loading device applied to ocean flexible pipe cable dynamic fatigue test device - Google Patents
Movable tension loading device applied to ocean flexible pipe cable dynamic fatigue test device Download PDFInfo
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- CN117782782A CN117782782A CN202410008914.6A CN202410008914A CN117782782A CN 117782782 A CN117782782 A CN 117782782A CN 202410008914 A CN202410008914 A CN 202410008914A CN 117782782 A CN117782782 A CN 117782782A
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- 238000009661 fatigue test Methods 0.000 title claims abstract description 25
- 238000012360 testing method Methods 0.000 claims abstract description 44
- 238000005452 bending Methods 0.000 claims abstract description 7
- 238000009434 installation Methods 0.000 abstract description 4
- 238000013461 design Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
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- 241000282414 Homo sapiens Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
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Abstract
The invention provides a movable tension loading device applied to a dynamic fatigue test device for marine flexible cables, which comprises a tension loading mechanism, a connecting mechanism and a movable positioning mechanism, wherein the tension loading mechanism is connected with the movable positioning mechanism through the connecting mechanism, and the movable positioning mechanism is used for moving the position of the tension loading mechanism and performing positioning and locking; the tension loading mechanism is fixedly connected with the test piece tensioning end and used for loading constant tension, and the connecting mechanism is used for releasing the rotation freedom degree of the test piece tensioning end in a bending plane. According to the invention, constant tension is loaded through the tension loading mechanism, and the initial rotation angle of the tensioning end of the test piece is balanced; the rotational freedom degree of the tensioning end of the test piece in the bending plane is released through the connecting mechanism, so that the tension direction is always consistent with the axial direction of the test piece; the test pieces with different lengths are installed through the movable positioning mechanism; the tension loading mechanism can be freely moved and fixed without detaching the frame and operating the crane, so that a great deal of labor cost and installation time are saved.
Description
Technical Field
The invention relates to the technical field of material test equipment, in particular to a movable tension loading device applied to a marine flexible pipe cable dynamic fatigue test device.
Background
With the increasing demand of human beings for energy, marine oil gas and marine cables are becoming important research objects in various countries. The marine flexible pipe cable is used as one of the equipment with the highest safety coefficient in marine equipment, the extreme working condition is not the main cause of failure, the fatigue performance of the marine flexible pipe cable needs to be focused, so that the marine flexible pipe cable can be safely operated during installation and operation, and the design method of the marine flexible pipe cable is verified.
The existing tension loading device for the marine flexible pipe cable fatigue test has certain design limitations, and the tension loading mechanism of the tension loading device needs to operate the crane to move after the cross beam above the tail part of the frame is disassembled, so that the time is relatively long. In addition, the existing tension loading mechanism needs to balance the initial rotation angle of the tensioning end through the counterweight, different test pieces correspond to different counterweights, and the replacement is needed after the frame is disassembled. Therefore, it is necessary to develop a movable tension loading device based on the main frame of the marine flexible pipe cable fatigue test device, move the tension loading mechanism and perform positioning and locking under the conditions of not disassembling the frame and not operating the crane, and balance the initial rotation angle so as to improve the intelligent level of the experiment.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide a movable tension loading device applied to a marine flexible pipe cable dynamic fatigue test device.
The invention provides a movable tension loading device applied to a marine flexible pipe cable dynamic fatigue test device, which comprises: the tension loading mechanism is connected with the movable positioning mechanism through the connecting mechanism, and the movable positioning mechanism is used for moving the position of the tension loading mechanism and performing positioning and locking; the tension loading mechanism is fixedly connected with the test piece tensioning end and used for loading constant tension, the connecting mechanism is used for releasing the rotation freedom degree of the test piece tensioning end in a bending plane, and the loaded tension direction is consistent with the axial direction of the test piece tensioning end all the time.
Preferably, the tension loading mechanism comprises an actuator, a connecting rod and a gas spring, and the actuator is fixedly connected with the test piece through the cooperation of the connecting rod and the flange.
Preferably, the actuator is loadable with a constant tension of at most 5000 kN.
Preferably, the connecting mechanism comprises a holding cylinder and a bolt, the actuator is nested in the holding cylinder, and the holding cylinder is connected with the movable positioning mechanism through the bolt.
Preferably, the movable positioning mechanism comprises a movable base, a heavy-load linear guide rail and a positioning upright post, wherein the heavy-load linear guide rail is arranged in parallel with the positioning upright post, the positioning upright post penetrates through the movable base, the movable base is mounted on the heavy-load linear guide rail, and the movable base can move along the trend of the heavy-load linear guide rail.
Preferably, the device further comprises a main frame, four positioning upright posts are connected with the vertical beams of the main frame through flanges, through holes are respectively formed in four corners of the movable base, the four positioning upright posts respectively penetrate through the through holes, the bottoms of the heavy-load linear guide rails are fixedly arranged between two main beams below the main frame, and the bottoms of the movable base are in sliding fit with the heavy-load linear guide rails.
Preferably, the maximum movement range of the movable base is 6m.
Preferably, the gas spring is hinged at the rear end of the actuator and is mounted on the heavy-duty linear guide rail, and the gas spring can move along the trend of the heavy-duty linear guide rail.
Preferably, the bolt is fixedly connected with the lugs on two sides of the movable base.
Preferably, the initial rotation angle of the tensioning end of the test piece is 0 degree.
Compared with the prior art, the invention has the following beneficial effects:
1. the invention is connected with a test piece through a tension loading mechanism and is used for loading constant tension, releasing torsion freedom degree and balancing the initial rotation angle of the tensioning end of the test piece; the tension loading mechanism is connected with the movable positioning mechanism through the connecting mechanism, and the rotation freedom degree of the tensioning end of the test piece in the bending plane is released, so that the tension direction is always consistent with the axial direction of the test piece; the tension loading mechanism is moved by the moving positioning mechanism and positioned and locked, so that test pieces with different lengths are installed; the tension loading mechanism can be freely moved and fixed without disassembling the frame and operating the crane, so that the test piece can be more intelligently installed, and a large amount of labor cost and installation time are saved.
2. According to the invention, the movable positioning mechanism is adopted, so that the position of the actuator can be moved without disassembling and operating a crane, the intelligent level is high, and the operation is convenient.
3. According to the invention, the initial rotation angles of the tensioning ends of different test pieces can be balanced by adjusting the stiffness of the gas spring, and various counterweights are not required to be manufactured, so that the economy is good.
Drawings
Other features, objects and advantages of the present invention will become more apparent upon reading of the detailed description of non-limiting embodiments, given with reference to the accompanying drawings in which:
FIG. 1 is a schematic diagram of a movable tension loading device mainly embodying the invention for use in a marine flexible umbilical dynamic fatigue test device;
FIG. 2 is a side view of a movable tension loading device embodying the present invention as applied to a marine flexible umbilical dynamic fatigue test device;
fig. 3 is a top view of a movable tension loading device embodying the present invention as applied to a marine flexible umbilical dynamic fatigue test device.
The figure shows:
air spring 3 of connecting rod 2 of actuator 1
Movable base 6 of holding cylinder 4 and bolt 5
Positioning upright post 8 of heavy-load linear guide rail 7
Detailed Description
The present invention will be described in detail with reference to specific examples. The following examples will assist those skilled in the art in further understanding the present invention, but are not intended to limit the invention in any way. It should be noted that variations and modifications could be made by those skilled in the art without departing from the inventive concept. These are all within the scope of the present invention.
As shown in fig. 1, the movable tension loading device applied to the marine flexible pipe cable dynamic fatigue test device provided by the invention comprises: the tension loading mechanism is connected with the movable positioning mechanism through the connecting mechanism, and the movable positioning mechanism is used for moving the position of the tension loading mechanism and performing positioning and locking; the tension loading mechanism is fixedly connected with the test piece tensioning end and used for loading constant tension, the connecting mechanism is used for releasing the rotation freedom degree of the test piece tensioning end in a bending plane, and the loaded tension direction is consistent with the axial direction of the test piece tensioning end all the time.
The movable tension loading device is applied to a marine flexible pipe cable dynamic fatigue test device, so that constant axial tension is applied to test pieces with different lengths. The tension loading mechanism is connected with the test piece and used for loading constant tension, releasing torsion freedom degree and balancing the initial rotation angle of the tensioning end of the test piece. The connecting mechanism is used for connecting the tension loading mechanism and the movable positioning mechanism and releasing the rotation freedom degree of the tensioning end of the test piece in the bending plane so as to ensure that the tension direction is always consistent with the axial direction of the test piece. The movable positioning mechanism is used for moving the tension loading mechanism and performing positioning and locking, so that test pieces with different lengths are installed. Compared with the conventional flexible pipe cable fatigue test device at home and abroad, the device can freely move and fix the tension loading mechanism without detaching the frame and operating the crane, can more intelligently install the test piece, and saves a large amount of labor cost and installation time.
The tension loading mechanism comprises an actuator 1, a connecting rod 2 and a gas spring 3, wherein the actuator 1 is in fastening connection with a test piece through the cooperation of the connecting rod 2 and a flange, the gas spring 3 is hinged at the rear end of the actuator 1, and the initial corner of the tensioning end of the test piece is balanced through the gas spring 3, so that a frame is not required to be disassembled and a counterweight is not required to be replaced for different test pieces.
The actuator 1 may be loaded with a constant tension of at most 5000 kN.
The connecting mechanism comprises a holding cylinder 4 and a bolt 5, the actuator 1 is nested in the holding cylinder 4, and the holding cylinder 4 is connected with the movable positioning mechanism through the bolt 5.
The movable positioning mechanism comprises a movable base 6, a heavy-load linear guide rail 7 and a positioning upright post 8, wherein the heavy-load linear guide rail 7 and the positioning upright post 8 are arranged in parallel, the positioning upright post 8 penetrates through the movable base 6, the movable base 6 is arranged on the heavy-load linear guide rail 7, and the movable base 6 can move along the trend of the heavy-load linear guide rail 7.
Further, this application still includes the main frame, and four positioning upright posts 8 are connected with the main frame vertical beam through the flange, and the through-hole has been seted up respectively to the four corners of movable base 6, and through-hole is passed respectively to four positioning upright posts 8, and heavy load linear guide 7 bottom passes through welding fastening to be installed in the middle of two girders of main frame below, and the bottom and the heavy load linear guide 7 sliding fit of movable base 6.
The maximum moving range of the movable base 6 is 6m, namely the tension loading mechanism can be freely moved in the range of 6m and positioned and locked, so that the movable base is applicable to test pieces with different lengths, and a frame and an operation crane are not required to be disassembled.
The gas spring 3 is mounted on the heavy-duty linear guide 7, and the gas spring 3 can move along the trend of the heavy-duty linear guide 7.
The bolt 5 is fixedly connected with the ears on two sides of the movable base 6.
The initial rotation angle of the tensioning end of the test piece is 0 degree. And when the marine flexible pipe cable fatigue test is carried out, the rotation and axial displacement degrees of freedom of the tensioning end of the test piece are released.
The application need not to dismantle and operate the crane, can remove actuator 1 position, and intelligent level is high, convenient operation. The application only needs to adjust the rigidity of the gas spring 3, can balance the initial rotation angles of the tensioning ends of different test pieces, does not need to manufacture various counterweights, and is good in economy. The axial tension device is not limited by the length of the test piece, and the constant axial tension can be applied to the test pieces with different lengths within 21 inches of the inner diameter by moving the positioning mechanism.
In the description of the present application, it should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate orientations or positional relationships based on the orientations or positional relationships illustrated in the drawings, merely to facilitate description of the present application and simplify the description, and do not indicate or imply that the devices or elements being referred to must have a specific orientation, be configured and operated in a specific orientation, and are not to be construed as limiting the present application.
The foregoing describes specific embodiments of the present invention. It is to be understood that the invention is not limited to the particular embodiments described above, and that various changes or modifications may be made by those skilled in the art within the scope of the appended claims without affecting the spirit of the invention. The embodiments of the present application and features in the embodiments may be combined with each other arbitrarily without conflict.
Claims (10)
1. The utility model provides a be applied to movable tension loading device of ocean compliance umbilical dynamic fatigue test device which characterized in that includes: the tension loading mechanism is connected with the movable positioning mechanism through the connecting mechanism, and the movable positioning mechanism is used for moving the position of the tension loading mechanism and performing positioning and locking;
the tension loading mechanism is fixedly connected with the test piece tensioning end and used for loading constant tension, the connecting mechanism is used for releasing the rotation freedom degree of the test piece tensioning end in a bending plane, and the loaded tension direction is consistent with the axial direction of the test piece tensioning end all the time.
2. The movable tension loading device applied to the marine flexible pipe cable dynamic fatigue test device according to claim 1, wherein the tension loading mechanism comprises an actuator (1), a connecting rod (2) and a gas spring (3), and the actuator (1) is fixedly connected with the test piece through the cooperation of the connecting rod (2) and a flange.
3. A movable tension loading device for use in a marine flexible pipe cable dynamic fatigue testing device according to claim 2, wherein the actuator (1) is adapted to be loaded with a constant tension of at most 5000 kN.
4. The movable tension loading device applied to the marine flexible pipe cable dynamic fatigue test device according to claim 2, wherein the connecting mechanism comprises a holding cylinder (4) and a bolt (5), the actuator (1) is nested in the holding cylinder (4), and the holding cylinder (4) is connected with the movable positioning mechanism through the bolt (5).
5. The movable tension loading device applied to the marine flexible pipe cable dynamic fatigue test device according to claim 4, wherein the movable positioning mechanism comprises a movable base (6), a heavy-load linear guide rail (7) and a positioning upright post (8), the heavy-load linear guide rail (7) is arranged in parallel with the positioning upright post (8), the positioning upright post (8) penetrates through the movable base (6), the movable base (6) is mounted on the heavy-load linear guide rail (7), and the movable base (6) can move along the trend of the heavy-load linear guide rail (7).
6. The movable tension loading device applied to the marine flexible pipe cable dynamic fatigue test device according to claim 5, further comprising a main frame, wherein four positioning upright posts (8) are connected with a vertical beam of the main frame through flanges, through holes are respectively formed in four corners of the movable base (6), the four positioning upright posts (8) respectively penetrate through the through holes, the bottom of the heavy-duty linear guide rail (7) is fixedly arranged between two main beams below the main frame, and the bottom of the movable base (6) is in sliding fit with the heavy-duty linear guide rail (7).
7. The movable tension loading device applied to the marine flexible pipe cable dynamic fatigue test device according to claim 6, wherein the maximum movement range of the movable base (6) is 6m.
8. The movable tension loading device applied to the marine flexible pipe cable dynamic fatigue test device according to claim 5, wherein the gas spring (3) is hinged at the rear end of the actuator (1) and is mounted on the heavy-duty linear guide rail (7), and the gas spring (3) can move along the trend of the heavy-duty linear guide rail (7).
9. The movable tension loading device applied to the marine flexible pipe cable dynamic fatigue test device according to claim 5, wherein the bolt (5) is fixedly connected with the lugs on two sides of the movable base (6).
10. The movable tension loading device applied to the marine flexible pipe cable dynamic fatigue test device according to claim 1, wherein the initial rotation angle of the tensioning end of the test piece is 0 degrees.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410008914.6A CN117782782A (en) | 2024-01-02 | 2024-01-02 | Movable tension loading device applied to ocean flexible pipe cable dynamic fatigue test device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410008914.6A CN117782782A (en) | 2024-01-02 | 2024-01-02 | Movable tension loading device applied to ocean flexible pipe cable dynamic fatigue test device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117782782A true CN117782782A (en) | 2024-03-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202410008914.6A Pending CN117782782A (en) | 2024-01-02 | 2024-01-02 | Movable tension loading device applied to ocean flexible pipe cable dynamic fatigue test device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117782782A (en) |
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2024
- 2024-01-02 CN CN202410008914.6A patent/CN117782782A/en active Pending
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